Cores and coverstocks are made to expand and contract as temperatures change. Extreme cold and extreme heat can make a bowling ball crack. ... Sweating is another chemical reaction that occurs when a bowling ball is removed from hot temperatures and brought into room temperature.

How do you stop bowling balls from cracking?

If you can keep your bowling ball's surface insulated from the air, you'll be in good shape to prevent it from cracking. The best way to do this is usually with a Ziploc bag or a garbage bag wrapped tight around it between uses. Keeping your bowling ball serviceable for years to come is not a difficult proposition.

Can you fix cracked bowling ball?

Cracks can be repaired with the help of a bowling ball repair kit—or you can buy sealant, sandpaper and polish on your own. Cracks have to be sealed thoroughly and completely set before you sand down the surface. This can take as long as three days, depending on the sealant.